CashBFF MCP

What it is

CashBFF is a personal finance MCP (Model Context Protocol) server. You connect your bank through Plaid, then ask Claude (or any MCP client) about your money in plain language: your balances, what is coming up, whether you can afford something, and where your cash goes. It runs as a hosted remote server, so you connect once and start asking.

• Website: https://cashbff.com

• MCP endpoint: https://api.cashbff.com/mcp

• Transport: Streamable HTTP

• Auth: OAuth 2.0 with PKCE and Dynamic Client Registration (you sign in with your phone)

Connect

CashBFF is a remote server. Most MCP clients connect through the mcp-remote bridge, which opens your browser for sign in and manages tokens for you.

{
  "mcpServers": {
    "cashbff": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.cashbff.com/mcp"]
    }
  }
}

Clients that support remote HTTP with OAuth directly (such as Claude Desktop and the claude.ai connector) can use the native form:

{
  "mcpServers": {
    "cashbff": {
      "type": "streamable-http",
      "url": "https://api.cashbff.com/mcp"
    }
  }
}

On first connect, your browser opens to sign in with your phone number and approve access. A CashBFF Talk subscription is required to connect, and you can start a free trial at cashbff.com.

Tools

CashBFF exposes 17 tools: 8 that read your money and 9 that write. Every write previews the change and waits for your confirmation before anything happens.

Read

Write (each asks for confirmation)

Safety and privacy

• You stay in control. Reads are read only, and every write shows you the change and waits for your yes.

• Bank transactions stay exactly as your bank reports them through Plaid. CashBFF reads and organizes, and your money stays where it is.

• Bank connections are handled by Plaid. CashBFF uses your data to answer your questions and nothing more.

• More detail lives on security, privacy, and terms.

Troubleshooting

• The connector will not connect. Confirm the URL is exactly https://api.cashbff.com/mcp. On first connect a browser window opens to sign in.

• Sign-in. You sign in with your phone number, then the one-time code sent to it. A CashBFF Talk subscription is required to connect; a free trial is available at cashbff.com.

• "Authorization failed" or the connection drops. Remove the connector and add it again to run a fresh sign-in. Access tokens refresh automatically once connected.

• A tool returns "not authenticated." Your session expired; reconnect the server.

• No data appears. Connect a bank through CashBFF first so there is data to read. Reviewers can use the provided test account, which is preloaded with sample data.

• Still stuck? Email daksh@cashbff.com.

About

CashBFF is built by Daksh Khanna (Khanna's LLC).

This repository is documentation for the hosted CashBFF MCP server. The server is hosted and maintained for you.